Ankle antagonist coactivation in the double-support phase of walking: Stroke vs. healthy subjects

Silva, Augusta; Pinheiro De Sousa, Andreia Sofia; Silva, Cláudia; Tavares, João Manuel R. S.; Santos, Rubim; Sousa, Filipa

http://hdl.handle.net/10400.22/7396

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Authors

Silva, Augusta

Pinheiro De Sousa, Andreia Sofia

Silva, Cláudia

Tavares, João Manuel R. S.

Santos, Rubim

Sousa, Filipa

Abstract(s)

Lesions at ipsilateral systems related to postural control at ipsilesional side, may justify the lower performance of stroke subjects during walking. To analyse bilateral ankle antagonist coactivation during double-support in stroke subjects. Methods: Sixteen (8 females; 8 males) subjects with a first isquemic stroke, and twenty two controls (12 females; 10 males) participated in this study. The double support phase was assessed through ground reaction forces and electromyography of ankle muscles was assessed in both limbs. Ipsilesional limb presented statistical significant differences from control when assuming specific roles during double support, being the tibialis anterior and soleus pair the one in which this atypical behavior was more pronounced. The ipsilesional limb presents a dysfunctional behavior when a higher postural control activity was demanded.

Keywords

Antagonist Coactivation ratio Stroke Double support Walking Leading limb Trailing limb

URI

http://hdl.handle.net/10400.22/7396

Citation

Silva, A., et al., Ankle antagonist coactivation in the double-support phase of walking: Stroke vs. healthy subjects. Somatosens Mot Res 2015; 32(3): 153-7.